› Forums › Assignment Help › The circumference of a circle is equal to 72 pi. Find the radius of this circle.

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  • September 2, 2011 at 6:01 am #1934
    john Smith
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    The circumference of a circle is equal to 72 pi. Find the radius of this circle.

    September 2, 2011 at 6:02 am #10519
    ahprofessional
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    C = 2 pi r, where r is the radius of the circle.

    Substitute C by 72 pi to obtain the equation

    72 pi = 2 pi r

    Simplify and solve for r to obtain

    r = 36

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